Carton



May 23, 1944. R. s. HARRINGTON 2,34%,589

CARTON Filed March 25, 1942 '6 (5.577? 7?, 47 024/5. fig

ted May 23. 1944 STATES T;

OFFICE tapas Bertie S. Harrington Chicago, 1111., assignor tn Armour d Compam. 1 m0,

ticn of m i .1 a gig lill., a carbon- This invention relates to a carton and more particularly to a carton of triangular cross-section suitable for packing butter in triangular blocks and other materials having such form.

It is especially desirable in the packaging of the butter and other products of this nature to provide a carton which gives as great support as possible yet at the same time it is necessary that the carton be extremely simple of construction and capable of being manufactured in large quantities at small expense. It is also desirable that the carton be opened with great ease and that it-be provided with a closing means which is eflective but yet which can be released very easily. A particular object of the invention is to provide a carton which can be opened at one movement, exposing the contents for inspection and use.

i have attained the above objects by providing a triangular shaped package, a preferred embodiment of which is set forth in the following detailed description taken with the accompanying drawing in which:

Fig. 1 is a view of the carton in blank and in the shape that it is cut from stock;

Fig. 2 is a perspective view of the carton in closed condition;

Fig. 3 is a perspective view of the carton partly open condition; and

Fig. 4 is a cross-sectional view of the carton taken as seen from line it of Figure 2.

The carton may be cut from stock in the form shown in Fig. 1. Referring particularly to this figure, the blank form includes face if of rectangular shape which may be called the basaface. Attached to the side of face it along line of fold it is the face M of rectangular form, and attached to the side of face If along line of fold it is the face it also of rectangular form. Attached to face it along line of fold lfi-is the flap it.

Attached to the face It along one end edge if is the end member if. The end member if is, as here illustrated, in the form of an equilateral triangle. Connected along edge lt of this member is the flap 28. Connected to the other edge it of the end member is one edge of the web member it. Another edge of web member 22 is connected along line of fowd it with the face if, and at its middle portion it contains the line of fold ft.

The other and edge of the base space It is connected with the end member 26 at line of fold it. This end it is also provided with a flap 211 corresponding with flap ill, and is connected with the web member it which corresponds with the web member if.

In closing the carton, the contents, which may be for example a triangular block of butter, is placed on the base face it; the end members it and 26 are then turned upwardly of lines of folds if and 25 respectively so as to bring these ends into transverse position. with respect to the face if; the flaps it and it are then folded inwardly; and the faces if and l folded about the ends to close the carton. The faces if and It and the flap it may be considered as a cover for the carton. As the cover is brought around the ends of the carton, the web members are each folded inwardly about the lines of fold it and if respectively in the manner more clearly shown in Figure 3 of the drawing.

As the face it is brought forward into position in front of the flaps if and if. the flap it is tucked behind the ends of ps wand 21! and is disposed just inside the base face til. Thus the engagement of flap it with the ends of flaps if and it serves in itself to hold the cover in closed condition. Also it will be apparent that flap it is held through its engagement between the face it and the carton contents.

An additional feature of the improved carton is the provision of i second flap it which is secured along the line of fold it. Conveniently this small flap may be formed by cutting the same from the material of flap it. When the carton is closed this second flap at is not tucked under the base side it as was just described in connection with the larger flap it, but is left to project on the exterior of the carton.

The person who opens the improved package may merely grasp the secondary tab it which conveniently projects on the exterior of the carton and the pull upwardly, only one hand being required for this movement. This automatically causes the flap it to be removed frombeneath the face it and the carton can be opened as indicated in Fig. 3, finally exposing the contents completely or at least the two sides which were covered by faces if and it. The end members if and it may be then folded sidewise to completely expose the contents of the carton on all sides except the side on which it is resting.

The improved carton is also easy to reclose when part of the contents have been used or removed;

An important feature of the invention is the means for maintaining the end members it and it in their transverse position when the cover of the carton is closed about them. It will be observed that with the web sections 22 and if in at folded position when the carton is closed, the

end members it! and 25 are firmly anchored with respect to the face 52 so that they cannot move either inwardly or outwardly about their lines of fold it and 25, in this way the end members are maintained in strict position untii it is desired to open the carton.

The foregoing detailed description has been given for purposes of explanation oniy, and it contemplated that various changes and modifications may be made in the described structure without in any way departing from the spirit of the invention.

What I claim as new and desire to secure by Letters Patent is:

i. A carton comprising a base face, a pair of triangular ends each having its one edge con nected by line of told with an end edge of said face, a cover including the second and third faces of the carton and being ioldable about said ends to close the carton, said second and third faces being joined at a line of fold and a pair of web sections each connecting an edge of an end with an end edge of said second face, said web sections being foldable inwardly and edecti've to maintain said ends in fixed annular position with respect to said faces, said ends cover and Webs being foldabie from a single sheet about said lines of fold to form a closed carton.

2, A carton comprising a base face, a pair of triangular ends each having its one edge connected by line of fold with an end edge of said face, a second face connected by line of fold to said base face, a third face connected by line oi fold to said second face, and a pair of Web sections each connecting an edge of an end with an end edge of said second face, said web sections being foldable inwardly and effective to maintain said ends in fixed position with respect to said faces, said second and third faces being foldable about said lines of fold to open and close the carton, said ends faces and webs being foldable from a single sheet about said lines of fold to form a closed carton.

BERTIE S. HARRINGTON. 

